Excavating dipper



July 15, 1930. w M E 1,770,543

EXCAVAT I'NG DIPPER Original Filed Feb. 21, 1927 3 Sheets-Sheet l ATTORNEY July 15, 1930. w, E, MlLEY 1,770,543

EXCAVATING DIPPER Original Filed Feb. 21. 1927'" 3 Sheets-Sheet 2 ATTORNEY .Fufiy 15, 1930. w. E. MILEY 1,770,543

EXCAVATING DIPPER Original Filed Feb. 21, 1927 3 Sheets-Sheet 3 //Vl/E/VTO/-?. WALTEF? E. M/LEY ATTORNEY.

Patented July 15, 1930 UNIT-so STATES" PATENT series WALTER E. MILEY, or amnion; orrro, ASSIGNOR TO THE'MARION STEAM snovnn CGMPAIIY, OF IVIARION, 01-110, A COB-PORATEGN OF OHIO EXCAVATING DIPPER Original application filed February 21,

This invention relates to excavating dippers of the type commonly employed in connection, with power operated shovels.

One object of the invention is to provide a dipper made up of a'plurality of parts or sections which Will be simple in its construction and of a very strong durable character; and which will be of such a character that it may be made either entirely of cast metal parts or of a combination of cast metal parts and plates. 7 Another object oi": the invention is toprovide such a dipper with abail 'bracket'of a'" strong durable character in which the openings for the bail pins will be maintained'per-' Another object of the invention isto pro-' manently in alinement and in which the bail brackets will be so connected with the dipper front as to cause the lifting strains to be imposed on the front.

vide such a dipper with :means for protecting the bail brackets from injury or wear due to contact with the material in'whieh the dipper is Working. p r I Other objects of the inventionwill appear as the device is described in detail.

In the accompanying drawings Fig. I is a side elevation partly in section, showing a dipper embodying my invention; Fig. 2 is a plan view of such a dipper, partly broken away; Fig. 3 is a detail view. ofthe top bar;

Fig. 4 is a side elevation ofthe dipper front; Fig. 5 is a side elevation of the lower portion of the side member; Fig. 6 is a side elevation 5 of the protector for the bail bracket; Fig. 7

is a top plan view of one of the bail brackets and its protector; Fig. 8 is a vertical sectional view taken through the bail bracket and pro tector; Figs. 9,10, 11 and 12,'show a slightly 0 modified form of the dipper, Fig. 9 being an Serial No. 169,786. Divided and this application filed September 12, 1927.

Serial No. 218,944.

17 is 'a side elevation of one of the bail brackets; Fig. 18 is aside elevation of the dipper front; Fig. 19=is a plan view of the side mem ber of Fig. 16; Fig. 20 is a plan view ofthe separate bail bracket of Fig. 17; Fig. 21' isa plan view of a portion of thefront of Fig. 18; Fig. dipper showing a modified form of protector for the bail bracket; and Fig.23 is a side clevation of the device shown in Fig. 22.

The present application is a division of the application filed, by me February 21, 1927, Serial No. 169,786. 4 In these drawings I have illustrated one embodiment of myinvention together with cer-. tain modifications thereof. The several parts or the dipper are of sucha character that the dipper may be made entirely of cast metal partszor may be made partly of castmetal parts and. partly of plates, the construction being such that either material may be used without change of desi n. The modifications consist for the most part of such changes as are necessaryto enable the side members to be made in one or more parts with the bail brack ets integral with or separate from the side members. will be understood that the em- Y bodiment here shown has been chosen for the purposes ofillustration only and that the various modifications. are merely typical of changes which may be made without departing from the spirit of the invention.

As a;1natter of convenience in the description the terms upper and lower, as used in connection with the dipper, have reference tothe dipper in the position shown in F ig. 1, in which the dipper front is in a vertical posi- L-lOIl.

Having reference more particularly to Figs. 1 to 5'. the dipper comprises a front 1,

1 I u I n o winch 1S slightly, curved in shape and is provided with rearwardly extending side portions 2. and mounted at the upper or cuttingd Of P front arethe usual teetl 3. In-

asmuch as this front is subjected to very severe wearit is usually made of cast metal, manganese, steel being preferable for this purpose. The dipper back is shown at at and carries the usual lugs for connecting'the same with the dipperarm and for pivot-ally 22 is a front elevationof a portion ofthe supporting the door as will hereinafter appear. Because of the strains imposed thereon the back also is usually a casting. The front and back are connected one to the other by side memhers which may be either castings or lates and which, further, may be formed in one part or in more parts. As shown, in Fig. 1 the side member comprises a'iower portion 5 and an upper portion or top bar 6. The side member as a whole overlaps and is rigidly secured to the back 4, preferably by means of rivets, and the forward portions of the side members overlap the respective side portions of the front and are rigidly secured thereto by rivets or the like. The front and rear portions of the side members may be recessed on their inner sides, as shown at 7, to cause the connected portions of the back and front to lie substantially Bush with the inner surfaces of the members. Arranged on the respective sides of the dipper are bail brackets 8 to receive, the arms of the bail by means of which the dip r is elevated. As here shown, each bail hrac at comprises an outer portion 91nd. an inner portion 10 formed in one plant. with the outer portion so that the openings to receive the bail pin may be propalined one with the other and will remain permanently in their properly alined positions. Usually the outer portion of the bail bracket is separate from the inner portion thereof and the inner portion thereof c'omprises a part of the side member or front of the dipper to which the outer portion of the bracket must be riveted. As a result it is very 'd-iflicult to obtain the proper alinement of the pin opening in the bracket with the pin opening in that part of the dipper to which the bracket is riveted. Moreover, due to the. severe service to which these dippers are subjected the outer portion of the bracket will frequently become loose, thus causing breakage and delay. By providin a complete bracket consisting of inner and outer portions formed in one piece the pin openings may be. very easily alined when the bracket is made and there is no possibility of their, getting out of alinement. I also prefer that the bail bracket as a whole should be formed in one piece with the adjacent part;

ofthe dipper and, as shown in Figs. 2 and 3, the bail bracket is cast integral with the top bar '6 of the adjacent side member of the dipper. As here shown, the top bar has at its forward end a downwardly extending Rodi-flora, or enlarged portion, 11 and the bail chat is cast integral with this part of the bar. That part of the bar by which the baillbracket is carried overlaps the rearwardly extending side portion 2 of the front Midliis rigidly secured thereto by rivets. However. it is desirable that the bail brackets be so connected with the dipper front that the severe strains imposed thereon will be transmitted from the brackets directly to the front, and the rivets connecting these parts will not be subjected to shearing strains. For this purpose the bail bracket mitted directly to the other. As here shown,

the inner portion of the bail bracket is pro vided with an inwardly extending lug w ich is preferably in the form of a boss 12 cast integral therewith and which, when the parts are in their assembled position, extends through an opening 13 in the rearwardly extending part of the front, this opening having a bearing surface 14 with which the lug or boss 12 contacts.

The bail brackets necessarily project from the sides of the dipper and the arrangement is such that they come in contact with the material in which the dipper is working and are subjected to very severe wear and are liable to breakage. To protect the bail brackets from this severe wear I have arranged on eachside of thedipper, in advance of the bail brackets, a guard 15, (see Figs. 6, 7 and 8). This and may take various forms but, as here s own,it comprises a body portion or plate overlying the outer side of the bail bracket and having at its forward and lower edges a flange 16 which lies below and in front of the bail bracket and is ri idly secured to the side of the dipper. T e guard is preferably provided at its upper edge with an inwardlyextending flange 17 which overlieslthe upper and rear edges of the outer portion 9 of the bracket. The rear portion of the guard is spaced from the adjacent side member of the dipper so as to provide an opening at the rear of the bracket to receive the bail when the dipper front approaches a horizontal position, andfthrough which may escape any material which may enter the guard. The guard is also provided with an opening, such as a slot 18, arranged in line with thepin openings of the bracket so that the bail pin may be removed without removing the guard.

As has been stated, this guard may take various forms and in Figs. 22 and 23 I have shown a guard which is mounted on the bail 19 and isso arranged with relation to the bail bracket that it will lie in front of that bracket. As here shown, the guard comprises a curved body 20. which is rigidily secured to the bail above the bracket and is provided with a depending flange 21 which overlies the upper portion of the bracket. The body portion of the guard extends for some distance in front of the bail and the guard as a whole is so arranged that it will lie in advance ofand overlap the bracket in all operative positions of the bail and the dipper.

The dipper is provided at its lower or discharge end with a door 29 which, in the preslltl arrangement being such that the door will: have swinging movement into and out of a position to close the lowerend of the dipper. The door is provided with a latch bar 32 adapted to engage a latch plate 35 on the dipper front to hold the door inits closed position- The latchplate may be mounted on the front inany suitable manner, but as shown in Fig. 1, the dipper front has in its lower edge a recess .36, a portionof which opens entireiy through the front, and the latch plate 35 is mounted in this recess, the plate and the front having overlapping portions which are rigidly connected one to the other by rivets or otherwise. The latch plate has an opening extending through the same to,

receive the iatch bar 32 and .the lower-portion of the latch plate is beveled at 136 to engage the end of the latch bar and retract the same as the door moves tov its closed position.

The several mayor parts of the dipper may take various forms, this being particularly trnewith relat on to the side members, each of which may consist of asingle part orof a pluralityofparts and which may have the bail brackets formed either in 'one piece therewith or separate therefroinand rigidly secured thereto. In Figs. 9 :to 15 I have shown-a second form of the dipper in which the front 4% and the back are of substantially the same construction as shown in Figs. 1 and 2 but the side member 46 is formed of a single part, it being either madefroma singie piece or fabricated from plates or sheets The general shape and arrangement of the parts is substantially the same as that of the side member shown in Fig. 1' with'the cxception that the top bar is integral with the lower portion of the side member. Bail brackets 47 have their inner and outer portions formed in one piece with each other and in one piece with the side member 46. The inner portion ofthe bail bracket has a lug or boss 12 arranged to enter the opening 13 in the adjacent side portion of the front; In these drawings the guardfor the bail bracket is not shown but the front is provided with a seat or pad 48 on which theguard may be mounted. a p

In that arrangement of thedipperparts shownin Figs. 1-6 to 21 the side member 50 is inone piece, it being here shown as fabricated from plates and bars, and it has at its upper end a forwardly extending part51 adapted toeztend on theinner side of the rearwardly' extendingside portion 52 ofthe, front 53. The bail bracket 54 is in this instance formed separate from the other; parts of the dipper and is mountedon the side portion of the-front and on the side member,.the bail bracket, front and side member being rigidly connected one to the other by rivets.

The inner and outer portions of this bail bracket are formed in a single piece and the inner portion has a stud orboss 12 to enter the opening 13 inthe sideportion of the front. The part 51 of the side member has an opening 55 in line with the pin openings 56 of the bail bracket to p facilitate the removal of the pin.

WhileI have shown and described one em-- bodiment of my invention, with certain modifications thereof, I wish it to be understood that I do not desire to be limited to the details thereof as various modifications may occur to a person skilled in the art,

Having now fully described my invention, what claim as new and desire to secure by Letters Patent, is;

' 1. In an excavating dipper, a front, a back,

sidemembers connecting said front with said back, bail brackets carried by the respective side members and each comprising inner and outer portions formed in one piece and having alined openings for the bail pin,-the inner portion of each bracket and said front having interlocking parts to transmit :the strain from the bracket to the front. 7

2. In an excavating dipper, a front, a back, side members'connecting said front and said back,and bail brackets each comprising inner and. outer members formed in one piece with one of saidside members and having alined openings toreceive a bail pin, said inner portions of said bracketsand said-front having interlocking" parts to transmit the strain from said bracket to said front;

3. In an excavating dipper, a front, a back, side members connecting said front and said back, bail brackets each comprising inner and outer members formed in one piece and having alined openings to receive a bail pin, the inner portion of each bracket and said front" having" interlocking parts to transmit the strains fromsaid bracket to said front. 4. In an excavating dipper, a front having rearwardly extending side portions each having an opening near the upper edge thereof, a back, side members connecting said front and said. back, and bail brackets carried by ping. and secured to the respective side por tions of said front and having lugseXt-ending into the openings in said side portions. 7,

' 5. In an excavating dipper, a front having rearwardly extending side 13 ortions'each having an opening near the upper edge" thereof, a back, side members connectingsaid front and said back, and bail brackets each comprising inner and outer portions formed in one piece and having aligned openings to receive a bail pin, the, inner portion of each bracket overlapping and secured .to one of theside portions of said front and having a boss arrangedabout saidpin opening and extendinginto the opening in said side portion ofsaid front. 1

6. In an excavating dipper, a; front having marwardiy extending side portions each hav-" rearwardly extending side portions, a back,

side members connecting said front and said back, each of said side members comprising a loiwer rtion and a top bar rigidly secured to uni lower portion, bail brackets arranged m the respective sidesv of said dipper andeaek comprising inner and outer portions formed in one piece and carried by the top. bar oithe adjacent side member.

8; In an excavating dipper, a bail bracket carried by said dipper, and a guard arranged in advance of said bail bracket to protect the samefrom injury by contact with the material in which said dipper is working, said guardbeing mounted independently of and spaced from said bail bracket.

-.9. In an excavating dipper, a bail bracket carriedbysaid di per,.and a guard mounted on said dipper in pendently of said bracket and having portions arrangedin front of and above said bail bracket.

10; In an excavating dipper, a bail bracket carried by saiddipper, and a guard, rigidly secured to said dipper in front of said bail bracket and extending rearwardly along the outer side of said bracket in spaced relation thereto.

11. In an excavating dipper, a bail bracket carried by said dipper, and a guard rigidly secured to said dipper in front of said bail bracket and-extending outwardly beyond said bracket and then rearwardly along the outer side ofsaid bracket, said guard also having a portion extending inwardly above the outer portion of said bracket and spaced therefrom.

12. In an excavating dipper, a bail bracket carried bysaid dipper and a guard rigidly secured to saiddipper in front of said bail bracket and extending rearwardly along the outer side of said bracket in spaced relation thereto and having an opening in line with the pin opening in said bracket.

13. In an excavating dipper, a front havin rearwardly extending lateral portions, a ck, side members secured at their rear edges tosaid back and at their forward edges to the respective lateral portions of said front, bail brackets rigidly supported by said sideffnembers and said lateral ortions of 'said front on the respective si es of said dipper-,and guards rigidly secured to the respectivelateral portions: of said front and to the respective side members and extending over the outer sides; of the respective bail brackets. v

14. In an excavatin dipper, a front having rearwardly exten ing lateral portions, a back, side members secured at their rear edges to said, back, and at their forward edges'to the respective lateral portions of said front, bail brackets rigidly supported by said side members and said lateral portions of said front on the respective sides of said dipper, guards rigidly secured to the respective lateral portions of said front and to the respective side members and extending over the outer sides of the respective bail brackets, the rear portions of said guards being spaced from the respective side mem bars to provide openings.

15. In an excavating dipper, a front having rearwardl extending side portions, a back, and si e members connecting said front and said back, each of said side members comprising a lower portion and an upper portion formed separate from the lower por tion, and hail brackets carried by said upper portions-of the respective side members.

16. In an excavating dipper, a front havingrearwa'rdly extending side portions, aback, side members connecting said front and said back, each of said side members coinprising'a lower rtion and a top bar formed separate from t e lower portion and having an enlarged part at its forward end, and hail brackets carried by said enlarged parts of the respective top bars.

17. In an excavating dipper, a front having rearwardly extending side portions, a back, side members connecting said front and said back, each of said side members comprising a lower portion and a top bar formed separate from t e lower portion and having an enlarged part at its forward end, and bail brackets formed in one piece with said forward end portions of the respective top bars.

18. In an excavating dipper, a front having rearwardly extending side portions, :1 back, side members connectin said front and said'back, each of said side members comprising a lower portion and atop bar formed separate from the lower portion, the forwardends of said top barsoverlapping the respective side portions of said front. and hail brackets each formedin one piece with the forward end portions of one of said tip) bars said top bars and said side portions o s f aid ront having interlocking parts.

19-. In an excavating dipper, a front having r'earwardly extending side portions, a back, side members connecting said front and said back, each of said side members comrising'a lower portion and a top portion,

0th parts of said side members being rigidly secured to said back and to the rearwardl'y hereto.

extending portions of said front, and a door hinged to'said back and movable into and out of a position to close the lower end of said dipper.

20. In an excavating dipper, a front having rearwardly extending side portions, a back, side members connecting said front and said back, each of said side members comprising a lower portion rigidly secured at its front and rear edges to said back and to one of the rearwardly extending side portions of said front and also comprising a top bar rigidly secured at its rear end to said back and at its front end to the rearwardly extending side portion of said front and also rigidly secured to the lower portion of said side member, and a door hinged to said back and movable into and out of a position to close the lower end of said dipper.

In testimony whereof, I afiix my signature WALTER E. MILEY. 

